Energy recovery method, device, new energy vehicle and computer storage medium

Abstract

The present invention discloses a method and device for energy recovery, a new energy vehicle, and a computer-readable storage medium, including: detecting various motion parameters during the movement of the new energy vehicle and obtaining each of the motion parameters; calculating a gravity parameter and a road friction force parameter according to each of the motion parameters, and determining an energy recovery torque parameter according to the gravity parameter and the road friction force parameter; determining a target energy recovery gear from multiple energy recovery gears of the new energy vehicle according to the energy recovery torque parameter; and controlling the new energy vehicle to perform an energy recovery operation according to the target energy recovery gear. By calculating the gravity parameter and the road friction force parameter, the present invention can calculate the energy recovery torque parameter more accurately, so that when the new energy vehicle is in different moving states, a more accurate energy recovery gear can be obtained, achieving the technical effect of making the energy recovery function of the new energy vehicle reach the optimal value and improving the endurance of the new energy vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, and particularly to an energy recovery method, device, new energy vehicle and computer-readable storage medium. Background Art

[0002] In order to meet the endurance requirements of users, new energy vehicles on the current market mainly include two ways to improve the endurance of new energy vehicles. One is to increase the battery capacity of the new energy vehicle, that is, to improve the endurance of the new energy vehicle by expanding the battery of the new energy vehicle. The other is to add an energy recovery function to the battery of the new energy vehicle, so as to improve the overall endurance of the new energy vehicle. However, due to reasons such as the large fluctuation of the energy recovery function of the current battery, the energy recovery effect of the new energy vehicle is poor. Summary of the Invention

[0003] Embodiments of the present invention provide an energy recovery method, device, new energy vehicle and computer-readable storage medium, aiming to improve the energy recovery effect of the battery in the new energy vehicle when using the energy recovery function.

[0004] To achieve the above object, the present invention provides an energy recovery method, which is applied to a new energy vehicle for energy recovery. The energy recovery method includes the following steps:

[0005] Detect each motion parameter during the movement of the new energy vehicle and obtain each motion parameter;

[0006] Calculate the gravity parameter and the road friction parameter according to each motion parameter, and determine the energy recovery torque parameter according to the gravity parameter and the road friction parameter;

[0007] Determine a target energy recovery gear from multiple energy recovery gears of the new energy vehicle according to the energy recovery torque parameter;

[0008] Control the new energy vehicle to perform an energy recovery operation according to the target energy recovery gear.

[0009] Further, the step of determining a target energy recovery gear from multiple energy recovery gears of the new energy vehicle according to the energy recovery torque parameter includes:

[0010] Detect a target range including the energy recovery torque parameter in the energy recovery torque ranges corresponding to the multiple energy recovery gears;

[0011] Determine the energy recovery gear corresponding to the target range as the target energy recovery gear.

[0012] Furthermore, after the step of determining a target energy recovery gear from a plurality of energy recovery gears of the new energy vehicle according to the energy recovery torque parameter, the method further includes:

[0013] Detecting whether the target energy recovery gear is consistent with a user-preset custom energy recovery gear;

[0014] If not, the energy recovery torque parameter is adjusted to be within the custom energy recovery torque range corresponding to the custom energy recovery gear, so as to control the new energy vehicle to perform energy recovery operation according to the custom energy recovery gear.

[0015] Furthermore, the step of adjusting the energy recovery torque parameter to within the custom energy recovery torque range corresponding to the custom energy recovery gear comprises:

[0016] Obtaining the custom energy recovery torque range;

[0017] When the energy recovery torque parameter is greater than the maximum value of the custom energy recovery torque range, reducing the energy recovery torque parameter to the maximum value;

[0018] When the energy recovery torque parameter is less than a minimum value of the user-defined energy recovery torque range, the energy recovery torque parameter is increased to the minimum value.

[0019] Furthermore, after the step of determining a target energy recovery gear from a plurality of energy recovery gears of the new energy vehicle according to the energy recovery torque parameter, the method further includes:

[0020] determining whether executing the energy recovery operation by the new energy vehicle according to the target energy recovery gear will cause instability of the new energy vehicle;

[0021] If so, the target energy recovery gear is adjusted, and the new energy vehicle is controlled to perform an energy recovery operation according to the adjusted target energy recovery gear.

[0022] Furthermore, the method further comprises:

[0023] updating the motion parameters according to a motion parameter update frequency preset by the user to obtain second motion parameters;

[0024] The gravity parameter and the road friction are updated according to each of the second motion parameters to obtain a second gravity parameter and a second road friction parameter, so as to perform the step of determining the energy recovery torque parameter according to the second gravity parameter and the second road friction parameter.

[0025] Further, the step of updating each of the motion parameters according to the motion parameter update frequency preset by the user to obtain each second motion parameter includes:

[0026] Detecting whether the data update frequency of the new energy vehicle reaches the motion parameter update frequency;

[0027] If it is detected that the data update frequency reaches the motion parameter update frequency, re-detecting each of the second motion parameters during the movement of the new energy vehicle and obtaining each of the second motion parameters.

[0028] In addition, to achieve the above object, the present invention further provides an energy recovery device, which is applied to a new energy vehicle for energy recovery. The device includes:

[0029] A parameter detection and acquisition module: used for detecting each motion parameter during the movement of the new energy vehicle and obtaining each of the motion parameters;

[0030] A torque parameter determination module: used for calculating a gravity parameter and a road friction parameter according to each of the motion parameters, and determining an energy recovery torque parameter according to the gravity parameter and the road friction parameter;

[0031] A recovery gear determination module: used for determining a target energy recovery gear from multiple energy recovery gears of the new energy vehicle according to the energy recovery torque parameter;

[0032] An energy recovery execution module: used for controlling the new energy vehicle to perform an energy recovery operation according to the target energy recovery gear.

[0033] In addition, to achieve the above object, the present invention further provides a new energy vehicle, which includes: a memory, a processor, and an energy recovery program stored on the memory and executable on the processor. When the processor executes the energy recovery program, the steps of the energy recovery method as described above are implemented.

[0034] In addition, to achieve the above object, the present invention further provides a computer-readable storage medium, on which an energy recovery program is stored. When the energy recovery program is executed by a processor, the steps of the energy recovery method as described above are implemented.

[0035] The energy recovery method, device, new energy vehicle and computer-readable storage medium provided by the embodiments of the present invention detect various motion parameters during the movement of the new energy vehicle and obtain each of the motion parameters; calculate the gravity parameter and the road friction parameter according to each of the motion parameters, and determine the energy recovery torque parameter according to the gravity parameter and the road friction parameter; determine the target energy recovery gear from multiple energy recovery gears of the new energy vehicle according to the energy recovery torque parameter; and control the new energy vehicle to perform an energy recovery operation according to the target energy recovery gear.

[0036] In this embodiment, when the new energy vehicle performs energy recovery, first, each sensing device configured in the new energy vehicle detects and obtains various motion parameters during the movement of the new energy vehicle. After that, the new energy vehicle inputs each of the motion parameters into a preset calculation model in the new energy vehicle, and calculates the gravity parameter and the road friction parameter of the new energy vehicle through the calculation model. Then, the gravity parameter and the road friction parameter are input into the control system in the new energy vehicle, and the control system calculates the energy recovery torque parameter according to the gravity parameter and the road friction parameter. Finally, the control system determines the energy recovery gear according to the energy torque parameter, and controls the new energy vehicle to perform the energy recovery operation according to the energy recovery gear.

[0037] In this way, by calculating the gravity parameter and the road friction parameter, the present invention can calculate the energy recovery torque parameter more accurately, so that when the new energy vehicle is in different moving states, a more accurate energy recovery gear can be obtained, achieving the technical effect of optimizing the energy recovery function of the new energy vehicle and improving the endurance of the new energy vehicle. Description of the Drawings

[0038] Figure 1 It is a schematic structural diagram of a new energy vehicle in the hardware operating environment related to the solution of the embodiment of the present invention;

[0039] Figure 2 It is a schematic flowchart of an embodiment of the energy recovery method of the present invention;

[0040] Figure 3 It is a schematic diagram of the mathematical model principle related to an embodiment of the energy recovery method of the present invention;

[0041] Figure 4 It is a schematic detailed flowchart related to an embodiment of the energy recovery method of the present invention;

[0042] Figure 5 It is a schematic diagram of the functional modules related to an embodiment of the energy recovery method of the present invention.

[0043] The realization, functional characteristics and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0044] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0045] Reference Figure 1 , Figure 1 This is a schematic diagram of the new energy vehicle structure of the hardware operating environment involved in the embodiment of the present invention.

[0046] The new energy vehicle involved in the embodiment of the present invention may specifically be a new energy vehicle equipped with an energy recovery device. Of course, the new energy vehicle may also be other types of new energy vehicles.

[0047] like Figure 1 As shown, the new energy vehicle may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a wireless fidelity (WIreless-FIdelity, WI-FI) interface). The memory 1005 may be a high-speed random access memory (Random Access Memory, RAM) memory, or a stable non-volatile memory (Non-Volatile Memory, NVM), such as a disk memory. The memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0048] Those skilled in the art will understand that Figure 1 The structure shown in the figure does not constitute a limitation on the new energy vehicle, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0049] like Figure 1 As shown, the memory 1005 as a storage medium may include an operating system, a data storage module, a network communication module, a user interface module and an energy recovery program.

[0050] exist Figure 1In the new energy vehicle shown, the network interface 1004 is mainly used for data communication with other devices; the user interface 1003 is mainly used for data interaction with users; the processor 1001 and the memory 1005 in the new energy vehicle of the present invention can be arranged in the new energy vehicle. The new energy vehicle calls the energy recovery program stored in the memory 1005 through the processor 1001 and executes the energy recovery method provided by the embodiments of the present invention.

[0051] Based on the above new energy vehicle, various embodiments of the energy recovery method of the present invention are provided.

[0052] Please refer to Figure 2 , Figure 2 is a schematic flowchart of the first embodiment of the energy recovery method of the present invention. It should be understood that although the logical order is shown in the flowchart, in some cases, the energy recovery method of the present invention can of course be executed in a different order from the steps shown or described here.

[0053] In this embodiment, the energy recovery method of the present invention is applied to a new energy vehicle configured with an energy recovery device for energy recovery. The energy recovery method of the present invention includes the following steps:

[0054] Step S10: Detect various motion parameters during the movement of the new energy vehicle and obtain each of the motion parameters;

[0055] In this embodiment, during the driving process of the new energy vehicle, through various sensing modules built in the new energy vehicle, various motion parameters of the new energy vehicle are detected during the driving process of the new energy vehicle. After obtaining each of the motion parameters, each of the motion parameters is stored in the storage module built in the new energy vehicle.

[0056] Exemplarily, for example, please refer to Figure 4 , Figure 4 is a detailed flowchart of this embodiment. During the driving process of the new energy vehicle, the ESC (Electronic Stability Control) system integrated in the new energy vehicle calls the acceleration sensor to obtain the acceleration parameters at each stage during the driving process of the new energy vehicle through the internally integrated CAN (Controller Area Network) network, calls the traction sensor to obtain the real-time traction parameters during the driving process of the new energy vehicle, and calls the slope sensor to obtain the road surface slope parameter of the road surface where the new energy vehicle is currently driving. Finally, the ESC system stores the acceleration parameter, the traction parameter, and the road surface slope parameter in the memory built in the new energy vehicle.

[0057] Step S20: Calculate the gravity parameter and the road friction parameter according to each of the motion parameters, and determine the energy recovery torque parameter according to the gravity parameter and the road friction parameter;

[0058] In this embodiment, the new energy vehicle reads the above-mentioned motion parameters stored in the storage module and inputs the motion parameters into the decision-making module built in the new energy vehicle. The decision-making module calculates the gravity parameter of the new energy vehicle and the friction parameter between the new energy vehicle and the driving road. According to the calculation model preset in the decision-making module, the energy recovery torque parameter for the new energy vehicle to perform energy recovery is calculated based on the gravity parameter and the friction parameter, and the energy torque parameter is input into the energy recovery module built in the new energy vehicle.

[0059] Exemplarily, for example, please refer to Figure 4 , the new energy vehicle calls the internally integrated ESC system to read the above-mentioned acceleration parameter, traction parameter and road surface gradient parameter stored in the memory built in the new energy vehicle, and inputs the acceleration parameter, the traction parameter and the road surface gradient parameter into the decision-making device built in the new energy vehicle. The gravity parameter of the new energy vehicle is calculated through the gravity model preset in the decision-making device, and the friction parameter between the new energy vehicle and the driving road is calculated according to the friction model preset in the decision-making device. Then, the decision-making device inputs the gravity parameter and the friction parameter into the calculation model preset in the decision-making device to calculate the energy recovery torque parameter for the user of the new energy vehicle to perform energy recovery operation. The ESC system inputs the energy recovery torque parameter into the hydraulic control unit in the energy recovery device.

[0060] It should be noted that, please refer to Figure 3 , Figure 3 is a schematic diagram of the principle of the mathematical model involved in this embodiment. In this embodiment, the calculation model preset by the user in the above-mentioned decision-making device is obtained based on Figure 3 the shown mathematical model. First, the resultant force of the new energy vehicle in the driving direction is obtained, and the resultant force F3 = F2 - mg×cosφ×f and the component force F1 = mg×sinφ shown in Figure 3 are calculated through the formula. Then, combined with the formula F = ma, the road friction coefficient f = (F2 - mg×sinφ - ma) / mg×cosφ is obtained. Further, according to the road friction coefficient f, it is obtained that: F2 - mg×sinφ - mg×cosφ×f = ma; Therefore, the force calculation formula for the first half acceleration stage of the new energy vehicle can be obtained based on the above formula: F 21 - mg×sinφ1 - mg×cosφ1×f = ma1 and the force calculation formula for the second half acceleration stage of the new energy vehicle: F 22 - mg×sinφ2 - mg×cosφ2×f = ma2;

[0061] Finally, according to the above formulas and Newton's law ΔF = mΔa, we can obtain: (F 21 -mg×sinφ1 - mg×cosφ1×f) - (F 22 -mg×sinφ2 - mg×cosφ2×f) = m(a1 - a2). Furthermore, the specific values of the friction coefficient f and the vehicle weight m can be specifically calculated. Based on the above formulas, a vehicle weight calculation model and a friction force calculation model in the calculation model can be established.

[0062] Step S30: Determine a target energy recovery gear from multiple energy recovery gears of the new energy vehicle according to the energy recovery torque parameter;

[0063] In this embodiment, the energy recovery module of the new energy vehicle reads the above energy recovery torque parameter. At the same time, the energy recovery module reads multiple energy recovery gears preset by the user in the new energy vehicle, and matches the energy recovery torque parameter with each energy recovery gear. According to the matching result, a target energy recovery gear for performing the energy recovery operation is determined from each energy recovery gear.

[0064] Exemplarily, for example, please refer to Figure 4 , after the above hydraulic control unit reads the above energy recovery torque parameter, it simultaneously reads multiple energy recovery gears preset by the user in the above ESC system. The hydraulic control unit matches the energy recovery torque parameter with each energy recovery gear, and determines a target energy recovery gear for performing the energy recovery operation from each energy recovery gear according to the matching result.

[0065] Further, in a feasible embodiment, the above step S30 may specifically include:

[0066] Step S301: Detect a target range including the energy recovery torque parameter in the energy recovery torque ranges corresponding to the multiple energy recovery gears;

[0067] In this embodiment, the new energy vehicle reads the energy recovery torque ranges corresponding to the above multiple energy recovery gears. Then, the new energy vehicle detects each energy recovery torque range, and determines a target range including the above energy recovery torque parameter according to the detection result.

[0068] Step S302: Determine the energy recovery gear corresponding to the target range as the target energy recovery gear;

[0069] In this embodiment, after the new energy vehicle determines the above target range, it determines the energy recovery gear corresponding to the target range, and further determines the energy recovery gear as the target energy recovery gear for the new energy vehicle to perform the energy recovery operation.

[0070] Exemplarily, for example, the ESC system of a new energy vehicle pre-receives a data packet sent by a user that contains the energy recovery torque ranges corresponding to multiple energy recovery gears. The ESC system parses the data packet and calls the hydraulic control unit in the energy recovery device to read the data packet, so as to determine the energy recovery torque range corresponding to each energy recovery gear. After that, the hydraulic control system detects each of the energy recovery torque ranges and determines a target range that includes the above-mentioned energy recovery torque parameter among the energy recovery torque ranges. Finally, the hydraulic control system reads the data packet, determines the energy recovery gear corresponding to the target range, and determines this energy recovery gear as the target energy recovery gear for the energy recovery device to perform energy recovery operations.

[0071] Further, in a feasible embodiment, after the above step S30, the energy recovery method of the present invention further includes:

[0072] Step A: Detect whether the target energy recovery gear is consistent with a custom energy recovery gear preset by the user;

[0073] In this embodiment, the new energy vehicle pre-receives an instruction sent by the user that triggers the control of the energy recovery module to perform energy recovery operations according to a custom gear. At the same time, the new energy vehicle reads the above-mentioned target energy recovery gear and determines whether the target energy recovery gear is consistent with the custom energy recovery gear.

[0074] Step B: If not, adjust the energy recovery torque parameter to the custom energy recovery torque range corresponding to the custom energy recovery gear, so as to control the new energy vehicle to perform energy recovery operations according to the custom energy recovery gear;

[0075] In this embodiment, if the new energy vehicle determines that the above-mentioned target energy recovery gear is inconsistent with the above-mentioned custom energy recovery gear, the new energy vehicle adjusts the calculated energy recovery torque parameter to the custom energy recovery torque range corresponding to the custom energy recovery gear, and controls the new energy vehicle to perform energy recovery operations according to the custom energy recovery gear.

[0076] Exemplarily, for example, the new energy vehicle pre-receives a user-triggered instruction containing control of the energy recovery device to perform an energy recovery operation according to a custom energy recovery gear. The ESC system receives and responds to the instruction. At the same time, the ESC system reads the target energy recovery gear in the hydraulic control unit, and determines whether the custom energy recovery gear is consistent with the target energy recovery gear. If the ESC system determines that the custom energy recovery gear is inconsistent with the target energy recovery gear, the ESC system reads the custom energy recovery torque range corresponding to the custom energy recovery gear, and calls the decision-making device to adjust the energy recovery torque parameter, and adjusts the energy recovery torque parameter to within the custom energy recovery torque range, and outputs the adjusted energy recovery torque parameter to the hydraulic control unit, and the hydraulic control unit controls the energy recovery device to perform the energy recovery operation based on the adjusted energy recovery torque parameter.

[0077] Furthermore, in a feasible embodiment, in the above step B, the step of "adjusting the energy recovery torque parameter to within the custom energy recovery torque range corresponding to the custom energy recovery gear" may specifically include:

[0078] Step B01: obtaining the user-defined energy recovery torque range;

[0079] In this embodiment, the new energy vehicle reads the custom energy recovery torque range corresponding to the custom energy recovery gear preset by the user, and determines the maximum value and the minimum value of the custom energy recovery torque range.

[0080] Step B02: when the energy recovery torque parameter is greater than the maximum value of the user-defined energy recovery torque range, reducing the energy recovery torque parameter to the maximum value;

[0081] In this embodiment, the new energy vehicle reads the energy recovery torque parameter calculated above and determines whether the energy recovery torque parameter is within the above-mentioned custom energy recovery torque range. When the new energy vehicle determines that the energy recovery torque parameter is greater than the maximum value of the custom energy recovery torque range, the new energy vehicle lowers the energy recovery torque parameter to the maximum value of the custom energy recovery torque range and stores the energy recovery torque parameter in a storage device.

[0082] Step B03: when the energy recovery torque parameter is less than the minimum value of the user-defined energy recovery torque range, increasing the energy recovery torque parameter to the minimum value;

[0083] In this embodiment, the new energy vehicle reads the energy recovery torque parameter obtained by the above calculation, and determines whether the energy recovery torque parameter is within the above-mentioned custom energy recovery torque range. When the new energy vehicle determines that the energy recovery torque parameter is less than the minimum value of the custom energy recovery torque range, the new energy vehicle increases the energy recovery torque parameter to the minimum value of the custom energy recovery torque range, and stores the energy recovery torque parameter in a storage device.

[0084] Exemplarily, for example, the new energy vehicle reads the above-mentioned user-preset custom energy recovery torque range stored in the memory, and determines the maximum and minimum values of the custom energy recovery torque range. After that, the new energy vehicle calls the built-in ESC system to read the above-mentioned calculated energy recovery torque parameter, and determines whether the energy recovery torque parameter is within the above-mentioned custom energy recovery torque range. When the ESC system determines that the energy recovery torque parameter is greater than the maximum value of the custom energy recovery torque range, the ESC system lowers the energy recovery torque parameter to the maximum value, and when the ESC system determines that the energy recovery torque parameter is less than the minimum value of the custom energy recovery torque range, the ESC system adjusts the energy recovery torque parameter to the minimum value and stores the energy recovery torque parameter in the memory.

[0085] Furthermore, in a feasible embodiment, after the above step S30, the energy recovery method of the present invention further includes:

[0086] Step C: determining whether the new energy vehicle performing the energy recovery operation according to the target energy recovery gear will cause instability of the new energy vehicle;

[0087] In this embodiment, when the new energy vehicle determines whether to perform energy recovery operations according to the target energy recovery gear obtained by the above calculation, the energy recovery module will cause the new energy vehicle to become unstable during driving or stop because of the energy recovery operation according to the energy recovery torque parameter corresponding to the target energy recovery gear.

[0088] Step D: If yes, adjusting the target energy recovery gear, and controlling the new energy vehicle to perform energy recovery operation according to the adjusted target energy recovery gear;

[0089] In this embodiment, if the new energy vehicle determines that performing energy recovery operations according to the energy recovery torque parameters corresponding to the target energy recovery gear will cause the new energy vehicle to become unstable during driving or cause the new energy vehicle to stop, the new energy vehicle adjusts the working gear of the energy recovery module and performs energy recovery operations according to the adjusted target energy recovery gear.

[0090] For example, when the new energy vehicle uses the ESC system to determine whether the energy recovery device will cause the new energy vehicle to become unstable or stop due to the energy recovery operation performed according to the above-mentioned energy recovery torque parameter when performing energy recovery operation according to the target energy recovery gear obtained by the above-mentioned calculation, and when the ESC system determines that the energy recovery operation performed according to the above-mentioned energy recovery torque parameter will cause the new energy vehicle to become unstable or stop, the ESC system inputs the energy recovery torque parameter into the decision-making device, adjusts the energy recovery torque parameter through the decision-making device, and inputs the adjusted energy recovery torque parameter into the hydraulic control unit, and the hydraulic control unit performs the energy recovery operation according to the target energy recovery gear corresponding to the adjusted energy recovery torque parameter.

[0091] Step S40: controlling the new energy vehicle to perform energy recovery operation according to the target energy recovery gear.

[0092] In this embodiment, after the ESC system in the new energy vehicle determines the target energy recovery gear, the ESC system calls the hydraulic control unit to control the energy recovery device to perform energy recovery operations according to the energy recovery gear.

[0093] Furthermore, in a feasible embodiment, the energy recovery method of the present invention further includes:

[0094] Step E: updating the motion parameters according to the motion parameter update frequency preset by the user to obtain second motion parameters;

[0095] In this embodiment, the new energy vehicle receives an instruction from the user in advance to set the motion parameter update frequency, and according to the instruction, sets the control system in the new energy vehicle to update the motion parameters stored in the storage module according to the motion parameter update frequency.

[0096] Step F: updating the gravity parameter and the road friction parameter according to each of the second motion parameters to obtain a second gravity parameter and a second road friction parameter, and performing the step of determining the energy recovery torque parameter according to the second gravity parameter and the second road friction parameter;

[0097] In this embodiment, the new energy vehicle inputs the updated second motion parameters into the decision module, and the decision module recalculates the new second gravity parameter and the second road friction parameter based on the second motion parameters, and stores the second gravity parameter and the second road friction parameter in the storage module so that the decision module can calculate the new energy recovery torque parameter based on the second gravity parameter and the second road friction parameter.

[0098] Exemplarily, for example, the ESC system of a new energy vehicle pre-receives an instruction from the user to set the update frequency of the motion parameters, and sets the above-mentioned acceleration sensor, traction sensor, and slope sensor in the new energy vehicle to detect the second acceleration parameter, the second traction parameter, and the second road surface slope parameter during the movement of the new energy vehicle according to the instruction, and inputs the second acceleration parameter, the second traction parameter, and the second road surface slope parameter into the memory to update each motion parameter. At the same time, the ESC system inputs the updated second acceleration parameter, the second traction parameter, and the second road surface slope parameter into the decision-making device, and the decision-making device obtains a new second gravity parameter and a second friction parameter based on the second acceleration parameter, the second traction parameter, and the second road surface slope parameter, and stores the second gravity parameter and the second friction parameter in the memory.

[0099] Further, in a feasible embodiment, the step E of "updating each of the motion parameters according to the update frequency of the motion parameters preset by the user to obtain each second motion parameter" may specifically include:

[0100] Step E01: Detect whether the data update frequency of the new energy vehicle reaches the update frequency of the motion parameters;

[0101] In this embodiment, the new energy vehicle calls the built-in frequency detection module to detect the data update frequency, and judges whether the data update frequency of the new energy vehicle reaches the above-mentioned update frequency of the motion parameters preset by the user based on the detection result.

[0102] Step E02: If it is detected that the data update frequency reaches the update frequency of the motion parameters, re-detect each of the second motion parameters during the movement of the new energy vehicle, and obtain each of the second motion parameters;

[0103] In this embodiment, when the above-mentioned frequency detection module detects that the above-mentioned data update frequency reaches the above-mentioned update frequency of the motion parameters, the control system of the new energy vehicle calls the above-mentioned sensing modules to re-detect each of the second motion parameters during the movement of the new energy vehicle, and stores each of the second motion parameters in the storage module.

[0104] Exemplarily, for example, the ESC system of a new energy vehicle calls an internal frequency sensor to detect the data update frequency, and based on the detection result, determines whether the data update frequency reaches the above-mentioned user-predefined motion parameter update frequency. When the frequency sensor detects that the data update frequency reaches the motion parameter update frequency, the ESC system calls the above-mentioned acceleration sensor, traction sensor, and slope sensor to re-detect the second acceleration parameter, second traction parameter, and second road surface slope parameter during the movement of the new energy vehicle, and inputs the second acceleration parameter, the second traction parameter, and the second road surface slope parameter into the memory to update each motion parameter.

[0105] In this embodiment, first, during the driving process of the new energy vehicle, through each sensing module built in the new energy vehicle, each motion parameter of the new energy vehicle is detected during the driving process of the new energy vehicle. After obtaining each motion parameter, each motion parameter is stored in the storage module built in the new energy vehicle. Then, the new energy vehicle reads each motion parameter stored in the storage module and inputs each motion parameter into the decision module built in the new energy vehicle. Through the decision module, the gravity parameter of the new energy vehicle and the friction parameter between the new energy vehicle and the driving road are calculated. According to the gravity parameter and the friction parameter, the energy recovery torque parameter for the new energy vehicle to perform energy recovery is calculated through a preset calculation model in the decision module, and the energy torque parameter is input into the energy recovery module built in the new energy vehicle. After that, the energy recovery module of the new energy vehicle reads the above-mentioned energy recovery torque parameter. At the same time, the energy recovery module reads multiple energy recovery gears preset by the user in the new energy vehicle, matches the energy recovery torque parameter with each energy recovery gear, and determines the target energy recovery gear for performing the energy recovery operation among each energy recovery gear according to the matching result. Finally, after the control system in the new energy vehicle determines the above-mentioned target energy recovery gear, the control system calls the hydraulic control unit to control the energy recovery device to perform the energy recovery operation according to the energy recovery gear.

[0106] In this way, compared with the existing methods for improving the endurance of new energy vehicles, the present invention can calculate the energy recovery torque parameter more accurately by calculating the gravity parameter and the road friction parameter. Therefore, when the new energy vehicle is in different moving states, a more accurate energy recovery gear can be obtained, achieving the technical effect of making the energy recovery function of the new energy vehicle reach the optimal value and improving the endurance of the new energy vehicle.

[0107] In addition, the present invention also provides an energy recovery device, and the energy recovery device of the present invention is applied to a new energy vehicle for energy recovery.

[0108] Please refer to Figure 5 , Figure 5This is a functional module diagram of an embodiment of the energy recovery device of the present invention, as shown in FIG. Figure 5 As shown, the energy recovery device of the present invention includes:

[0109] Parameter detection and acquisition module: used to detect various motion parameters of the new energy vehicle during movement and obtain the various motion parameters;

[0110] a torque parameter determination module, configured to calculate a gravity parameter and a road friction parameter according to the motion parameters, and determine an energy recovery torque parameter according to the gravity parameter and the road friction parameter;

[0111] a recovery gear determination module, configured to determine a target energy recovery gear from a plurality of energy recovery gears of the new energy vehicle according to the energy recovery torque parameter;

[0112] Energy recovery execution module: used to control the new energy vehicle to perform energy recovery operation according to the target energy recovery gear.

[0113] Furthermore, the recovery gear determination module includes:

[0114] A range detection unit is configured to detect a target range including the energy recovery torque parameter in the energy recovery torque ranges corresponding to the plurality of energy recovery gears;

[0115] A gear determination unit is configured to determine the energy recovery gear corresponding to the target range as the target energy recovery gear.

[0116] Furthermore, the recovery gear determination module further includes:

[0117] Gear detection unit: used to detect whether the target energy recovery gear is consistent with the user-preset custom energy recovery gear;

[0118] A parameter adjustment unit is used to adjust the energy recovery torque parameter to within the custom energy recovery torque range corresponding to the custom energy recovery gear if it is detected that the target energy recovery gear is inconsistent with the custom energy recovery gear, so as to control the new energy vehicle to perform energy recovery operations according to the custom energy recovery gear.

[0119] Furthermore, the parameter adjustment unit includes:

[0120] Range determination subunit: used for obtaining the custom energy recovery torque range;

[0121] a parameter reduction subunit: configured to reduce the energy recovery torque parameter to the maximum value when the energy recovery torque parameter is greater than the maximum value of the custom energy recovery torque range;

[0122] Parameter improvement subunit: used to increase the energy recovery torque parameter to the minimum value of the custom energy recovery torque range when the energy recovery torque parameter is less than the minimum value of the custom energy recovery torque range.

[0123] Further, the recovery gear determination module further includes:

[0124] Instability judgment unit: used to judge whether the new energy vehicle will be unstable when performing the energy recovery operation according to the target energy recovery gear;

[0125] Gear adjustment unit: used to adjust the target energy recovery gear if it is judged that the new energy vehicle will be unstable when performing the energy recovery operation according to the target energy recovery gear, and control the new energy vehicle to perform the energy recovery operation according to the adjusted target energy recovery gear.

[0126] Further, the parameter detection and acquisition module includes:

[0127] Motion parameter update unit: update each of the motion parameters according to the motion parameter update frequency preset by the user to obtain each second motion parameter.

[0128] Torque parameter update unit: used to update the gravity parameter and the road friction force according to each of the second motion parameters to obtain a second gravity parameter and a second road friction force parameter, so as to perform the step of determining the energy recovery torque parameter according to the second gravity parameter and the second road friction force parameter.

[0129] Further, the motion parameter update unit includes:

[0130] Update frequency detection subunit: used to detect whether the data update frequency of the new energy vehicle reaches the motion parameter update frequency;

[0131] Motion parameter update subunit: used to re-detect each of the second motion parameters during the movement of the new energy vehicle and obtain each of the second motion parameters if it is detected that the data update frequency reaches the motion parameter update frequency.

[0132] In addition, the present invention also provides a new energy vehicle, on which there is an energy recovery program that can run on a processor. When the new energy vehicle executes the energy recovery program, it realizes the steps of the energy recovery method described in any one of the above embodiments.

[0133] The specific embodiments of the new energy vehicle of the present invention are basically the same as those of the above embodiments of the energy recovery method, and will not be described in detail here.

[0134] In addition, the present invention also provides a computer-readable storage medium, which stores an energy recovery program. When the energy recovery program is executed by a processor, the steps of the energy recovery method described in any of the above embodiments are implemented.

[0135] The specific embodiments of the computer-readable storage medium of the present invention are basically the same as the embodiments of the energy recovery method, and will not be described in detail here.

[0136] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or system. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or system comprising the element.

[0137] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0138] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, including a number of instructions for enabling a new energy vehicle (which can be a new energy vehicle equipped with an energy recovery device, of course, the new energy vehicle can also be other types of new energy vehicles, etc.) to execute the methods described in the various embodiments of the present invention.

[0139] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for recovering energy, characterized in that, The energy recovery method is applied to a new energy vehicle for energy recovery, and the energy recovery method includes the following steps: Detect various motion parameters during the movement of the new energy vehicle and obtain each of the motion parameters; Calculate the gravity parameter and the road friction parameter according to each of the motion parameters, and determine the energy recovery torque parameter according to the gravity parameter and the road friction parameter; Determine the target energy recovery gear from multiple energy recovery gears of the new energy vehicle according to the energy recovery torque parameter; Control the new energy vehicle to perform an energy recovery operation according to the target energy recovery gear; Update each of the motion parameters according to the motion parameter update frequency preset by the user to obtain each second motion parameter; Update the gravity parameter and the road friction according to each of the second motion parameters to obtain a second gravity parameter and a second road friction parameter, so as to determine a new energy recovery torque parameter according to the second gravity parameter and the second road friction parameter.

2. The energy recovery method according to claim 1, characterized in that The step of determining the target energy recovery gear from multiple energy recovery gears of the new energy vehicle according to the energy recovery torque parameter includes: Detect a target range including the energy recovery torque parameter in the energy recovery torque ranges corresponding to each of the multiple energy recovery gears; Determine the energy recovery gear corresponding to the target range as the target energy recovery gear.

3. The energy recovery method according to claim 1, characterized in that, After the step of determining the target energy recovery gear from multiple energy recovery gears of the new energy vehicle according to the energy recovery torque parameter, the method further includes: Detect whether the target energy recovery gear is consistent with a custom energy recovery gear preset by the user; If not, adjust the energy recovery torque parameter to the custom energy recovery torque range corresponding to the custom energy recovery gear, so as to control the new energy vehicle to perform an energy recovery operation according to the custom energy recovery gear.

4. The energy recovery method according to claim 3, characterized in that, The step of adjusting the energy recovery torque parameter to the custom energy recovery torque range corresponding to the custom energy recovery gear includes: Obtain the custom energy recovery torque range; When the energy recovery torque parameter is greater than the maximum value of the custom energy recovery torque range, reduce the energy recovery torque parameter to the maximum value; When the energy recovery torque parameter is less than the minimum value of the custom energy recovery torque range, increase the energy recovery torque parameter to the minimum value.

5. The energy recovery method according to claim 1, characterized in that, After the step of determining the target energy recovery gear from multiple energy recovery gears of the new energy vehicle according to the energy recovery torque parameter, the method further includes: Judge whether performing the energy recovery operation according to the target energy recovery gear will cause the new energy vehicle to become unstable; If so, adjust the target energy recovery gear and control the new energy vehicle to perform an energy recovery operation according to the adjusted target energy recovery gear.

6. The energy recovery method according to claim 1, characterized in that, The step of updating each of the motion parameters according to the motion parameter update frequency preset by the user to obtain each second motion parameter includes: Detect whether the data update frequency of the new energy vehicle reaches the motion parameter update frequency; If it is detected that the data update frequency reaches the motion parameter update frequency, re-detect each of the second motion parameters during the movement of the new energy vehicle, and obtain each of the second motion parameters.

7. An energy recovery device, characterized in that, The energy recovery device is applied to a new energy vehicle for energy recovery, and the device includes: A parameter detection and acquisition module: used to detect each motion parameter during the movement of the new energy vehicle, and obtain each of the motion parameters; A torque parameter determination module: used to calculate the gravity parameter and the road friction parameter according to each of the motion parameters, and determine the energy recovery torque parameter according to the gravity parameter and the road friction parameter; A recovery gear determination module: used to determine the target energy recovery gear from multiple energy recovery gears of the new energy vehicle according to the energy recovery torque parameter; An energy recovery execution module: used to control the new energy vehicle to perform an energy recovery operation according to the target energy recovery gear; Update each of the motion parameters according to the motion parameter update frequency preset by the user to obtain each second motion parameter; Update the gravity parameter and the road friction according to each of the second motion parameters to obtain a second gravity parameter and a second road friction parameter, so as to determine a new energy recovery torque parameter according to the second gravity parameter and the second road friction parameter.

8. A new energy vehicle, characterized in that, The new energy vehicle includes: a memory, a processor, and an energy recovery program stored on the memory and executable on the processor. When the processor executes the energy recovery program, the steps of the energy recovery method according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium, characterized in that, An energy recovery program is stored on the computer-readable storage medium. When the energy recovery program is executed by the processor, the steps of the energy recovery method according to any one of claims 1 to 6 are implemented.

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